Beginning her career in television at ABC Weekend TV, she worked on Armchair Theatre as a story editor, where she devised the science fiction anthology series Out of this World.
Moving to the BBC, she briefly worked as a story editor before being promoted to producer, creating the science fiction anthology television series Out of the Unknown.
[6] At ABC, she worked as a story editor for producer Sydney Newman on the anthology series Armchair Theatre, overseeing such plays as Where I Live by Clive Exton, A Night Out by Harold Pinter and After The Funeral by Alun Owen.
An enthusiast of science fiction, while working on Armchair Theatre she oversaw Murder Club, an adaptation of Robert Sheckley’s novel Seventh Victim.
Its success enabled her to persuade Newman to develop a science fiction version of Armchair Theatre – this became Out of This World, a thirteen part anthology series, hosted by Boris Karloff, that aired between 30 June 1962 and 22 September 1962.
One of the best-received installments of Story Parade that Shubik worked was an adaptation of Isaac Asimov's 1954 novel The Caves of Steel starring Peter Cushing.
[7] Among the most notable productions were adaptations of Kate Wilhelm’s Andover and the Android, John Brunner’s Some Lapse of Time, E.M. Forster’s The Machine Stops and Mordecai Roshwald’s Level 7.
[9] However, Edna's writer Jeremy Sandford later wrote that Shubik seemed to "sabotage" the effectiveness of the play influencing policy makers in her 1975 book on television drama by questioning the veracity of its content.
Shubik commissioned six new Rumpole scripts from John Mortimer with a view to making a series but a change of senior personnel in the BBC led to the project being put on hold.
When Granada got cold feet about the scale of the project and the cost of filming in India, Shubik suggested that she produce an adaptation of Scott's Staying On as a pilot.
[9] Shubik did not produce The Jewel in the Crown, having moved on to write the screenplay for the film Girl on a Swing for Columbia Pictures, but, having worked extensively on the fourteen scripts, was given a “devised by” credit at the start of each episode.